Results 101 to 110 of about 161,009 (301)

Catalysts for polyimide foams from aromatic isocyanates and aromatic dianhydrides [PDF]

open access: yes, 1979
Polyimide foam products having greatly improved burn-through and flame-spread resistance are prepared by the reaction of aromatic polyisocyanates with aromatic dianhydrides in the presence of metallic salts of octoic acid. The salts, for example stannous
Estrella, C. A.   +2 more
core   +1 more source

Porosity Engineering of MXene Architectures: Toward High‐Performance Aqueous Electrochemical Energy Storage

open access: yesAdvanced Materials, EarlyView.
This review systematically summarizes recent advances in porosity engineering of MXenes, with a focused discussion on their structure‐governed energy storage properties. A critical analysis of structure–property relationships is presented across alkali‐ion batteries, multivalent‐ion batteries, and supercapacitors.
Shude Liu   +8 more
wiley   +1 more source

Investigation of the Effectiveness of a Compact Heat Exchanger with Metal Foam in Supercritical Carbon Dioxide Cooling

open access: yesEnergies
Printed circuit heat exchangers (PCHE) are ideal for use in very demanding operating conditions. In addition, they are characterized by very high efficiency, which can still be increased.
Roman Dyga
doaj   +1 more source

Lightweight refractory insulation and method of preparing the same Patent [PDF]

open access: yes, 1970
Preparation and characteristics of lightweight refractory ...
Mountvala, A. J.   +2 more
core   +1 more source

Metamaterial Antennas Enhance MRI of the Eye and Occipital Brain

open access: yesAdvanced Materials, EarlyView.
A radiofrequency antenna platform comprising planar and bend configurations is developed, incorporating structurally integrated epsilon‐negative metamaterial unit cells to enhance MRI. These antennas enable high‐resolution in vivo human MRI of the eye, orbit, and occipital brain. Comprehensive validation, including simulations, phantom experiments, SAR,
Nandita Saha   +14 more
wiley   +1 more source

A New Two-Phase Pressure Drop Correlation for Metal Foam Channels

open access: yesZhileng xuebao, 2021
The metal foam used for filling a heat exchanger channel can effectively improve two-phase heat transfer performance and has good application prospects.
Liu Yu, Li Xue, Wang Shixue, Zhu Yu
doaj  

Open Cell Conducting Foams for High Synchrotron Radiation Beam Liners

open access: yes, 2014
The possible use of open-cell conductive foams in high synchrotron radiation particle accelerator beam liners is considered. Available materials and modeling tools are reviewed, potential pros and cons are discussed, and preliminary conclusions are drawn.
Petracca, Stefania, Stabile, Arturo
core   +2 more sources

Multifunctional Bio‐Based Packaging for Perishable Foods: Structural Design, Scalable Fabrication, and Versatile Applications

open access: yesAdvanced Materials, EarlyView.
An overview of design principles and scalable fabrication strategies for multifunctional bio‐based packaging. Radiative cooling films, modified‐atmosphere films/membranes, active antimicrobial/antioxidant platforms, intelligent optical/electrochemical labels, and superhydrophobic surfaces are co‐engineered from material chemistry to mesoscale structure
Lei Zhang   +6 more
wiley   +1 more source

Investigation into stress wave propagation in metal foams

open access: yesEPJ Web of Conferences, 2015
The aim of this study is to investigate stress wave propagation in metal foams under high-speed impact loading. Three-dimensional Voronoi model is established to represent real closed-cell foam. Based on the one-dimensional stress wave theory and Voronoi
Li Lang, Xue Pu, Chen Yue
doaj   +1 more source

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